:root{--text:#6b6375;--text-h:#08060d;--bg:#fff;--border:#e5e4e7;--code-bg:#f4f3ec;--accent:#4f63ff;--accent-bg:#4f63ff1f;--accent-border:#4f63ff4d;--shadow:#00000014 0 12px 30px;--sans:system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--heading:system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--mono:ui-monospace, Consolas, monospace}@media (prefers-color-scheme:dark){:root{--text:#cbd5e1;--text-h:#f8fafc;--bg:#0f172a;--border:#334155;--code-bg:#1e293b;--accent:#818cf8;--accent-bg:#818cf826;--accent-border:#818cf859;--shadow:#00000040 0 12px 30px}}html{box-sizing:border-box;font-size:16px}*,:before,:after{box-sizing:inherit}body{min-height:100vh;font-family:var(--sans);color:var(--text);background:#f3f4f6;margin:0;line-height:1.5}@media (width<=1024px){html{font-size:15px}}#root{flex-direction:column;width:min(100%,1126px);min-height:100vh;margin:0 auto;display:flex}h1,h2,h3,h4,h5,h6{color:var(--text-h);font-family:var(--heading);margin:0}p{margin:0}button,input,select{font:inherit}:root{--text:#6b6375;--text-h:#111827;--bg:#fff;--border:#e5e4e7;--shadow:#0f172a14 0 12px 30px;--accent:#4f63ff;--accent-soft:#4f63ff1f;--surface:#f8fafc}*{box-sizing:border-box}body{min-height:100vh;color:var(--text);background:#f3f4f6;margin:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}.container{width:min(100%,1126px);margin:0 auto;padding:30px 24px 48px}h1{color:var(--text-h);text-align:center;margin:0 0 24px;font-size:clamp(2rem,3.5vw,3.5rem)}h2{color:var(--text-h);margin:0;font-size:1.5rem}p{color:#475569;margin:0}.nav{flex-wrap:wrap;justify-content:center;gap:12px;margin:24px auto 32px;display:flex}.nav-link{color:#475569;background:#fff;border:1px solid #0000;border-radius:999px;justify-content:center;align-items:center;padding:10px 18px;font-weight:600;text-decoration:none;transition:all .2s;display:inline-flex}.nav-link:hover{box-shadow:var(--shadow);transform:translateY(-1px)}.nav-link.active{color:#fff;background:var(--accent);border-color:var(--accent)}.converter-page{justify-items:center;display:grid}.converter-card{border:1px solid var(--border);width:100%;max-width:720px;box-shadow:var(--shadow);background:#fff;border-radius:24px;padding:34px}.result-card{gap:20px;display:grid}.card-header{gap:10px;margin-bottom:28px;display:grid}.converter-form{gap:20px;display:grid}.form-group{gap:10px;display:grid}label{color:#475569;font-size:.95rem;font-weight:600}.converter-input,.converter-select{color:#111827;background:var(--surface);border:1px solid #d6d3e1;border-radius:14px;width:100%;min-height:48px;padding:12px 14px;font-size:1rem}.converter-input:focus,.converter-select:focus{border-color:var(--accent);outline:none;box-shadow:0 0 0 4px #4f63ff1f}.converter-button{background:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:14px;width:fit-content;padding:14px 22px;font-size:1rem;font-weight:700;transition:transform .2s,box-shadow .2s}.converter-button:hover{transform:translateY(-1px);box-shadow:0 16px 30px #4f63ff33}.form-placeholder{color:#1e293b;background:#eef2ffe6;border:1px dashed #4f63ff59;border-radius:18px;padding:24px;font-size:.95rem}.result-box{color:#111827;background:linear-gradient(135deg,#4f63ff1a,#4f63ff0a);border:1px solid #4f63ff24;border-radius:18px;padding:28px;font-size:clamp(1.15rem,2vw,1.6rem);line-height:1.4}.result-box strong{font-weight:800}@media (width<=640px){.container{padding:22px 16px 30px}.nav{gap:8px}.nav-link{padding:10px 14px;font-size:.95rem}.converter-card{padding:24px}}